#define  _CRT_SECURE_NO_WARNINGS  1
#include <stdio.h>
#include <assert.h>
char* my_strcpy(char* b, const char* a)
{
	char* p = b;
	assert(*b && *a);
	while (*b++ = *a++)
	{
		;
	}
	return p;
}
int main()
{
	char a[100] = "abcde";
	char b[100];
	printf("%s", my_strcpy(b, a));

	return 0;
}